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V125BC [204]
3 years ago
9

Please help!

Mathematics
2 answers:
olganol [36]3 years ago
8 0
<span>The area to be determined is a segment of the circle.

Since central angle is 120 degrees and 120/360 = 1/3
area of sector of circle is (1/3)*36pi = 12pi
For the area of triangle, you can split it into 2 30-60-90 right triangles with sides 3:3sqrt3:6
thus base of triangle is 6sqrt3 and height is 3

Area = 1/2 * 3* 6sqrt3 = 9sqrt3 -->
segment area = 12pi - 9sqrt3</span>
KiRa [710]3 years ago
3 0

The area to be determined is a segment of the circle.

Since central angle is 120 degrees and 120/360 = 1/3

area of sector of circle is (1/3)*36pi = 12pi

For the area of triangle, you can split it into 2 30-60-90 right triangles with sides 3:3sqrt3:6

thus base of triangle is 6sqrt3 and height is 3

Area = 1/2 * 3* 6sqrt3 = 9sqrt3 -->

segment area = 12pi - 9sqrt3

I just did this so I know it's correct.

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